Weight Won't Budge

Oh no, I'm not trying to lose too many pounds nor am I aiming for the perfect bikini body.  What I want is to at least shed a few so I would fit into my old clothes again.  I gained so much during the past months after I quit smoking.  My doc says it's natural and it might take a few more months to have the thyroid working again.  I still continue to workout though I have to admit it gets frustrating sometimes.  I work so hard but the weight won't even budge.  I asked him if I could take usp labs oxyelite pro, a fat incinerating formula especially made for women who have slow metabolism (that's me!).  He said, he'll check on it and will let me now ASAP.